Power swing mechanism for paver booms



March 1 8, 1930. J. DANIEL. 5

POWER SWING MECHANISM FOR PQVER BOOMS Filed Sept. 15, 192'? *2Sheets-Sheet 1 8 3 z @iM 32 1 J I 7 /5 7 I 1; 9 29 4/ I w/L /0 g I I I,Q i I 4- I 2 I ml Q 6/ I 2'; A m r /9 I;

March 18, 1930. J. DANIEL POWER SWING MECHANISM FOR PAVER BOOMS FiledSept. 13, 1927 2 Sheets-Sheet 2 amt-Mm Patented Mar. 18, 1930 UNITEDSTATES PAT JOHN DANIEL, OF MILWAUKEE, VVIES(Z'O1-TSIN, ASSIGNOB TOKOEI-IRING- COMPANY, OF

NT OFFICE,

MILWAUKEE, WISCONSIN, A CORPORATION POWER SWING MEGHANISM FOR PAVERBOOMS Application filed September 13, 1927. Serial No. 219,342. 7

In the'operation of boom and bucket pavers, distribution of the concreteis elfectlve over a very wide are through the adjustment of'theswing-boom. This adjustment is secured in the majority of instances bymanuallyshifting the boom about its pivot, either through theinstrumentality of a hand operated shaft geared to the boom, or bypressure exerted by the laborers against the outer portion of the boom,as the work proceeds. Both of these methods have numerous disadvantages,among which may be mentioned the paratus, suchas now commonly used, isexceedingly dificult especially where the machine may happen to standupon an incline and is more less canted to one side in which event'themovement of the boom about its pivot through a rising plane isfrequently impossible or requires a combined effort of a number ofworkmen.

The present improvements have as their object to provide a power swingfor the boom by which is meant an adjustment of the boom through theapplication of the motive power of the engine employed for operating themixer, the bucket, the traveling support and other operatinginstrumentalities of the apparatus.

' To this end the invention seeks to provide a simple mechanism fortransmitting motion from the prime mover to the boom so that the lattermay be adjusted quickly at any time desired for effective distributionof the materials bythe bucket traversing the boom.

In carrying out this idea, I have combined the necessary operatingmechanism for adjusting the boom with mechanism employed for shiftingthe discharge chute of the mixer so that, by a single control lever,-theopera- I,

tor may shift the chute to either its mixing or discharging positions,or swing the boom in opposite directions, as the case may require.However, I do not wish to be restricted to such combined control sinceit will be quite obvious that the adjustment of thechute and boom may beindependently accomplished by a proper segregation of the means foroperating these members within the skill of a mechanic familiar with theprinciplesof these mechanisms. i

In the accompanying drawings:

Fig. 1 is a front elevation of my power swing mechanism applied to aconventional form of paver apparatus, illustrating only such details ofthe latter as are necessary for a general understanding of these means;

Fig. 2 is a side elevation thereof;

Fig. 3 is a detailed view of thelclutch' shifting fork and itssupporting bracket;

Fig. 4 is a detailed view of the control lever andits guide block;

Fig. 5 is a sectional view taken about on the plane indicated by theline 5-5 of Fig. 1, showingmore clearlythe operating connections betweenthe power shaftand the respective boom and chute adjusting shafts Fig. 6is a fragmentary view of the clutch housing and its lever accommodatingslot and showing the various positions of the'control lever for cheatingthe several boom and chute adjustments; and I Fig. 7 is a horizontalsectional View on the line Y 'Z of Fig.1. r

Referring to the drawings, and specifically describing the mechanisms,10 designates the framework of a paver machine on the end of which ispivotally mounted the swingboom 11 and the swing-chute 12 secured to itsadjusting shaft 13 disposed transversely of the frame'and having at oneend the operating handle 13.

At one side and extending longitudinally of the frame is arranged thepower shaft 14 journalled in the forward bearing 15 and constantlydriven by the engine (not shown). On the end of this shaft are theopposed bevel pinions 1616, eachprovided with the clutch element 16 withwhich the respective cone clutches 17 are adapted to engage. The pinionsconstantly mesh with a gear 18 fixed on engagement, a control lever 20is provided,

the end of a counter-shaft 19 to which motion in reverse directions istransmitted from the 7 power or drum drive-shaft by the engagementof'the clutches 17. F or effecting this said lever being formed with theyoke 21 em bracing the customary ring carried by the clutch spool. Thelower end of the lever is formed with a ball or nub 22 which is receivedby the grooved guide block 23 secured to the bracket support 24 attachedto the bearing 15;

Upon the inner end 'of the counter-shaftis loosely mounted a cable drum25 formed with a clutch face 26 with which the cooperating.

in Fig. 4:. The end of the arm is disposed between the springs 33 on therod 32 to provide a snap-over action, as will be more clearly apparentfrom the following detailed 'description.

Upon'the shaft 19, at the opposite side of the clutch collar is alsoloosely mounted the sprocket wheel 34 formed with a clutch face 35 and,connected by the chain 36'with the boom-swing shaft 37 having anaccommodat ing chain sprocket .38 splined thereon. It so happens thatthis shaft 37 is the one customarily employedfor manually adjusting theboom about its pivot, advantage being taken of such element, where theapparatus is provided with a manual means of this sort;

' but, of necessity, where no such shaft is employed, one may beprovidedas a part of the equipment constituting the power-swing mechanism ofthis invention. Such shaft is provided with an ordinary worm indicatedat 39 meshing with the gear segment 40' carried by the boom support.Itis also preferably supplied with a hand adjusting wheel 41 so thateither the power or hand adjustment of the; boom is obtainable, asnecessity may require. It will beapparent, from the foregoingdescription, that the motion of the chain 19 may be transmitted to theshaft 37 for swinging the boom by simply shifting the control lever 20in the proper direction to bring the cutch collar 27 into engagementwith the sprocket 34. The direction of movement of the boom, as well asthe direction of movement of the discharge chute will, of course, dependupon the direction of rotation of shaft 19, as controlled by engagementof respective clutches 17 This compound movement, so to speak, of thelever 20 ispermitted by the virtue of the engagement of the ball 22 withthe grooved guide. 23.

To serve as a guide for the respective movements of the lever, Ipreferably provide the cover of the clutch housing 42 with a guide slot43, in the shape of the letter H, a'sshown clearly in Fig. 6. Theposition of the lever at a is neutral; at Z) produces a right boom:swing, speaking with reference to the position of the operator whenfacing toward the boom from his station on the platform of the machine;atc the left boom-swing; at d positionsthedischargechute in mixingposition and at e in discharge position. Forward and rearward movementsof the lever-at one sideof the slots, therefore, effect chute operationsand corresponding movements atthe other side of the .slot efiect boomadjustments. U I

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is i 1. In a concrete'paver in combination-, a movablechute for amixing drum, aswingable boomadjacent said'chute, an operating said boom, and common control meansfor efiecti'ng operationof either said chute or said boom from-saidshaft.

' 2. In a concrete paver in combination, a movable chute for a mixingdrum, a swingable boom adjacent said chute, a. power operated. shaft,means cooperating with said shaft I for producing reverse motions,and'means inshaft operatively connected to saidchutei and shafts, saidclut'ch. means having a common control.

4. In a concrete paver, afram'e, a swingboom connected thereto, aswing-chute for a mixing drum andadjacent said boom, a constantly drivenoperating shaft, a countershaft operatively connectedto the chute andboom, clutch means intermediate the operating shaft and thecounter-shaft for driving the counter-shaft in. either direction, andclutch means intermediate the counter-shaft and the chute and boom forconnecting either. the chute or the boom to the-reversiblecounter-shaft.

5. In a concrete-paver, a frame, a swingboom connected thereto, aswing-chute fora mixing drum and adjacent said boom, a constantly drivenoperating shaft, a countershaft operatively connected to the chuteandboom, clutch means intermediate the operat ing shaft and thecounter-shaft, and control means common to both clutch means.

6. In a concrete paver, a swing-boom connected thereto, a movable chute,an engine operated shaft, a counter-shaft having gear connection withthe engine shaft, clutch means on the engine shaft for transmittlngreverse motions to the counter-shaft, a shaft operatively connected tothe boom, means for transmitting motion from the counter-shaft to theboom operating shaft, a chute operating shaft, means on saidcounter-shaft for transmitting motion to the chute operating shaft, anda control lever connected to the last named means and t0 the clutchmeans on the engine shaft.

7. In a concrete paver, a frame, a swingboom connected to said frame, aswing-chute mounted on said frame adjacent the boom, an operating shaft,means for swinging the boom or chute from the operating shaft, and acontrol lever shiftable laterally to transmit motion of the operatingshaft to either the chute or the boom and forwardly and rearwardly toeffect reverse swing movements of the chute or boom.

8. In a concrete paver, a frame, a swingchine, combined with adistributing device for receiving said materials and distributing themto the subgrade, including a boom, and a common control device forcausing operation of the chute and for moving the boom to control thedistribution action thereof.

10. In combination, a discharge chute'for concrete distributing machinesadapted to control the discharge of a concrete mixer by which aggregatesare commingled, a distributing device cooperative to receive mixedaggregates discharged by the chute and including a boom for facilitatingsuch distribution, power mechanism for the operation of the chute andthe said boom, and a control device common to the said parts for theirproper operation.

In testimony whereof I aflix my signature.

JOHN DANIEL.

